WO2002061397A1 - Analyse de la structure des pores de couches individuelles de materiaux poreux composites multicouches - Google Patents

Analyse de la structure des pores de couches individuelles de materiaux poreux composites multicouches Download PDF

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Publication number
WO2002061397A1
WO2002061397A1 PCT/US2002/000396 US0200396W WO02061397A1 WO 2002061397 A1 WO2002061397 A1 WO 2002061397A1 US 0200396 W US0200396 W US 0200396W WO 02061397 A1 WO02061397 A1 WO 02061397A1
Authority
WO
WIPO (PCT)
Prior art keywords
sample
pore
liquid
gas
pressure
Prior art date
Application number
PCT/US2002/000396
Other languages
English (en)
Inventor
Krishna Gupta
Nalina Gupta
Akshaya Jena
Original Assignee
Porous Materials, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Porous Materials, Inc. filed Critical Porous Materials, Inc.
Priority to EP02717296A priority Critical patent/EP1358465A1/fr
Publication of WO2002061397A1 publication Critical patent/WO2002061397A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N2015/084—Testing filters

Definitions

  • Multi-layered porous materials and functionally graded porous materials with gradually changing pore structure are being increasingly used for high technology applications.
  • the effectiveness of such materials depends upon the pore structure of individual layers, however, currently available techniques are incapable of providing a measurement of the pore structure of individual layers of a multi-layered composite material.
  • porosimetry only measures the pore volume and pore volume distribution of the entire composite.
  • one of the layers is very thin and the low pore volume associated with this layer is not detectable by porosimetry.
  • Flow porometry measures the size of the constricted part of the pores in the entire composite.
  • the pores in various layers of such composite materials cannot be distinguished using this method, or others taught by the prior art.
  • a new technique based on the principles of flow porometry has been developed to measure pore structure of individual layers of a composite material. The invention is described below and the analysis of results obtained with a two layered composite filtration medium is presented.
  • the pressure required to displace the liquid (Equation 2) varies with location along the length of the pore and is a maximum at the most constricted part of the pore ( Figure 3).
  • the pore will be completely emptied, gas flow will occur and the presence of the pore will be detected by flow porometry only when the pressure is equal to this maximum pressure.
  • flow porometry measures the diameter of the constricted part of the pore.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne un procédé de détermination de la structure des pores des couches individuelles d'un matériau poreux composite multicouche, consistant à fournir un échantillon de matériau poreux multicouche, à enfermer hermétiquement cet échantillon dans une chambre d'essai appropriée, à remplir les pores du matériau échantillon avec un liquide mouillant, de sorte que le rapport liquide/énergie libre de surface d'échantillon soit inférieur au rapport gaz/énergie libre de surface d'échantillon, au moyen d'un gaz non réactif pour appliquer une pression sur un côté de l'échantillon enfermé hermétiquement dans la chambre d'essai, à augmenter progressivement la pression du gaz, de sorte à déplacer le liquide des pores, et à augmenter l'écoulement de gaz à travers l'échantillon, à mesurer la pression à laquelle le liquide s'écoule de chaque couche successive du matériau échantillon, et à calculer la structure des pores au moyen d'une équation choisie dans le groupe constitué par p=η(dS/dV), D=4η/p et f=-d[100(Fw/Fd)]/dD.
PCT/US2002/000396 2001-01-31 2002-01-08 Analyse de la structure des pores de couches individuelles de materiaux poreux composites multicouches WO2002061397A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02717296A EP1358465A1 (fr) 2001-01-31 2002-01-08 Analyse de la structure des pores de couches individuelles de materiaux poreux composites multicouches

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26547001P 2001-01-31 2001-01-31
US60/265,470 2001-01-31

Publications (1)

Publication Number Publication Date
WO2002061397A1 true WO2002061397A1 (fr) 2002-08-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/000396 WO2002061397A1 (fr) 2001-01-31 2002-01-08 Analyse de la structure des pores de couches individuelles de materiaux poreux composites multicouches

Country Status (3)

Country Link
US (1) US6766257B2 (fr)
EP (1) EP1358465A1 (fr)
WO (1) WO2002061397A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2982951A1 (fr) * 2011-11-23 2013-05-24 Diam Bouchage Cellule pour la mesure de la permeabilite de plaques de joint
CN109900612A (zh) * 2017-12-11 2019-06-18 中国科学院大连化学物理研究所 一种多孔材料透水压测试装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7274447B2 (en) * 2004-06-21 2007-09-25 Swce Material porosity pressure impulse testing system
US7614279B2 (en) * 2006-10-10 2009-11-10 Porous Materials, Inc. Determination of pore structure characteristics of filtration cartridges as a function of cartridge length
CN105126629B (zh) * 2015-09-08 2017-06-16 国家海洋局天津海水淡化与综合利用研究所 一种中空纤维膜贯通孔隙率的测试方法和装置
EP3502659B1 (fr) * 2017-12-22 2020-04-22 Université d'Aix Marseille Permeametrie en milieu gazeux rarefie pour caracteriser une structure poreuse multicouche

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1927171A1 (de) * 1969-05-28 1970-12-03 Bbc Brown Boveri & Cie Methode zur Ermittlung der Porengroessenverteilung
DE3312729A1 (de) * 1983-04-08 1984-10-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Verfahren und messkammer zur ermittlung des porendurchmessers von mikro- und ultrafiltrationsmembranen
EP0139202A1 (fr) * 1983-09-09 1985-05-02 Fujisawa Pharmaceutical Co., Ltd. Appareil pour tester des membranes filtrantes, et appareil de stérilisation de liquides à l'aide d'une membrane filtrante
US4744240A (en) * 1986-05-27 1988-05-17 Akzo Nv Method for determining the bubble point or the largest pore of membranes or of filter materials
EP0831318A1 (fr) * 1996-09-10 1998-03-25 Millipore Corporation Essai des filtres par intrusion d'eau

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US4217336A (en) * 1975-06-24 1980-08-12 Le Carbone-Lorraine Artificial graphite
DE3480177D1 (en) * 1983-11-25 1989-11-23 Asahi Chemical Ind A porous adsorbent for adsorbing low density lipoproteins
IL105142A (en) * 1993-03-23 1997-01-10 Aga Ab Method of improving the selectivity of carbon membranes by chemical carbon vapor deposition
JP2921787B2 (ja) * 1995-06-23 1999-07-19 キヤノン株式会社 被記録媒体及びこれを用いた画像形成方法
US5696198A (en) * 1996-01-22 1997-12-09 Electrosorbent, Inc. Porous electroconductive composite material, and method of manufacturing the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1927171A1 (de) * 1969-05-28 1970-12-03 Bbc Brown Boveri & Cie Methode zur Ermittlung der Porengroessenverteilung
DE3312729A1 (de) * 1983-04-08 1984-10-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Verfahren und messkammer zur ermittlung des porendurchmessers von mikro- und ultrafiltrationsmembranen
EP0139202A1 (fr) * 1983-09-09 1985-05-02 Fujisawa Pharmaceutical Co., Ltd. Appareil pour tester des membranes filtrantes, et appareil de stérilisation de liquides à l'aide d'une membrane filtrante
US4744240A (en) * 1986-05-27 1988-05-17 Akzo Nv Method for determining the bubble point or the largest pore of membranes or of filter materials
EP0831318A1 (fr) * 1996-09-10 1998-03-25 Millipore Corporation Essai des filtres par intrusion d'eau

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JENA A K ET AL: "In-plane compression porometry of battery separators", JOURNAL OF POWER SOURCES, ELSEVIER SEQUOIA S.A. LAUSANNE, CH, vol. 80, no. 1-2, July 1999 (1999-07-01), pages 46 - 52, XP004172803, ISSN: 0378-7753 *
V. GUPTA ET AL.: "Substitution of alcohol in porometers for bubble point determination", ADVANCES IN FILTRATION AND SEPARATION TECHNOLOGY, vol. 13b, 1999, pages 833 - 844, XP001040810 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2982951A1 (fr) * 2011-11-23 2013-05-24 Diam Bouchage Cellule pour la mesure de la permeabilite de plaques de joint
CN109900612A (zh) * 2017-12-11 2019-06-18 中国科学院大连化学物理研究所 一种多孔材料透水压测试装置
CN109900612B (zh) * 2017-12-11 2023-12-15 中国科学院大连化学物理研究所 一种多孔材料透水压测试装置

Also Published As

Publication number Publication date
US6766257B2 (en) 2004-07-20
EP1358465A1 (fr) 2003-11-05
US20020147551A1 (en) 2002-10-10

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